IM 1128-2 15
EVAPORATOR
TUBE SHEET
TUBE SHEET
SUPPORT
PLATE
CONDENSER
TUBE SHEET
BOLTED
BOLTED
WELDED
TWO ANGLE PLATES,
ONE WELDED TO EVAP.
ONE WELDED TO COND.
THEN BOLTED TOGETHER.
Type II Reassembly
Description
TYPE II: The compressor with its terminal box is removed and shipped on a skid. The condenser,
evaporator, oil sump, oil cooler and tube sheet support plates will remain connected only by their
attachment bolts, ready for field disassembly on site and subsequent reassembly in the building. All
wiring and piping that interconnects the components will have been removed and will require
reinstallation. The loose parts will be packaged in a separate crate.
1. Block-offs will cover all openings on the compressor and vessels.
2. The compressor and vessels will receive a 5-psi helium holding charge.
3. The compressor will not be insulated at the factory. An insulation kit will be shipped with the unit
and will also include a container of adhesive.
4. Only the evaporator shell will be factory insulated. Loose insulation will be shipped for the
remaining surface areas.
5. The starter will ship loose.
6. The refrigerant will be field supplied.
7. All field piping connections will be Victaulic, flanged, O-ring face seal or copper brazing.
8. Bracket and cable kit will be included for all unit-mounted starters and/or cableway for mini-cabs.
9. All free piping ends will be capped.
10. Touch-up paint and stick-on wire ties will be included.
11. A bolted bracket instead of a weld will mount the oil pump.
12. The discharge piping assembly will have a bolted flange connection (instead of welded) at the
condenser. This assembly will ship loose.
13. Piping that remains attached to a component will be supported if it is not rigid.
14. The chiller will not be run-tested at the factory but the compressor, oil pump assembly and heat
exchangers will be tested as sub-assemblies.
15. The control panels are shipped separately but have all sensors wired in, labeled and tied up.
Matching labels will exist at the sensor connection to the unit.
Reassembly Steps
NOTE: Additional instructions may be shown on the assembly drawings.
The Type II arrangement is shipped with the evaporator, condenser, tube sheet support plate, oil cooler
and oil sump bolted together. This provides structural support during transit and also allows several
options for disassembly.
Figure 10, Component Disassembly
In most cases for narrow entry, the condenser will be separated
by unbolting it from the evaporator angle bracket and from the
tube sheet support plate. This leaves the evaporator and the
support plate that has the mounting foot extended under where
the condenser used to be. Therefore, the evaporator is usually
unbolted from the two support plates, which can then be easily
handled by themselves.
Remove compressor and vessel holding charge through the Schrader valve in the block-off plates
before attempting to loosen any fittings on them. Failure to do so can cause severe bodily injury.
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